P-100 SPF Primer

SKU: P-100-55

Our P-100 SPF Primer (often called Night-Seal) is used to seal your spray foam projects overnight. For those projects when you don't have time to apply a top-coat or haven't completed all foam passes, use our SPF Primer to protect your foam from UV degradation until you can complete them.

Available in: Black color and 5 and 55-gallon containers. 

Application: Spray-applying is recommended.


P-100 SPF Primer is a plasticizer-free, single component, water-based, acrylic primer developed to prime aged asphalt, SPF, metal, wood, and concrete surfaces, improving the adhesion and overall yield over sprayed polyurethane foam. P-100 is designed with specialized polymers and wetting agents that maximize adhesion. P-100 also has the unique ability to “breathe”, providing a completely watertight membrane while allowing trapped moisture to escape.

Storage and Shelf Life: P-100 has a recommended shelf life of 12 months from the date of manufacture when stored in unopened containers between 50°F and 100°F. Refer to product packaging for date of manufacture.


Prep: Prior to starting your roofing project, prep the roof by power-washing, removing dirt and debris, and making any necessary repairs. Ensure roof is completely dry prior to applying any primer or silicone. For more detailed preparation instructions, view our Technical Resources page. 

Mix: Separation may occur prior to product application. This is normal and does not impact performance. Product should be mixed with a drill mixer for ~5 minutes prior to application.

Application: P-100 is intended to be spray-applied. It can also be applied with a brush or roller. P-100 should be applied at a rate of 1 gallon per 200 square feet. 

Spray: Contact PM for specific pump, hose, and spray gun requirements.
Roller: 1¼” nap roller.

Limitations & Precautions:

This product cures only by water evaporation. P-100 should not be applied when the ambient temperature is below 50°F, or if there is a possibility the temperature could fall below 32°F within 24 hours. Application is not recommended if rain or dew is expected before product dries.

Technical Documents